High-Dimensional Architectures from the Self-Assembly of Lanthanide Ions with Benzenedicarboxylates and 1,10-Phenanthroline
dataset
posted on 2003-07-17, 00:00 authored by Yonghong Wan, Liping Zhang, Linpei Jin, Song Gao, Shaozhe LuSix new coordination polymers, [Eu(1,2-BDC)(1,2-HBDC)(phen)(H<sub>2</sub>O)]<i><sub>n</sub></i> (<b>1</b>), [Eu<sub>2</sub>(1,3-BDC)<sub>3</sub>(phen)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>]<i><sub>n</sub></i>·4<i>n</i>H<sub>2</sub>O
(<b>2</b>), [Eu(1,4-BDC)<sub>3/2</sub>(phen)(H<sub>2</sub>O)]<i><sub>n</sub></i> (<b>3</b>), [Yb<sub>2</sub>(1,2-BDC)<sub>3</sub>(phen)(H<sub>2</sub>O)<sub>2</sub>]<i><sub>n</sub></i>·3.5<i>n</i>H<sub>2</sub>O (<b>4</b>), [Yb<sub>2</sub>(1,3-BDC)<sub>3</sub>(phen)<sub>1/2</sub>]<i><sub>n</sub></i> (<b>5</b>), and
[Yb<sub>2</sub>(1,4-BDC)<sub>3</sub>(phen)<sub>2</sub>(H<sub>2</sub>O)]<i><sub>n</sub></i> (<b>6</b>), were synthesized by hydrothermal reactions of lanthanide chlorides with three
isomers of benzenedicarboxylic acid (H<sub>2</sub>BDC) and 1,10-phenanthroline (phen), and characterized by single-crystal
X-ray diffraction. <b>1</b> has a 2-D herringbone architecture with a Z-shaped cavity. <b>2</b> and <b>5</b> have different 3-D networks,
but both are formed by 1,3-BDC anions bridging metal centers (Eu or Yb) via carboxylate groups. <b>3</b> and <b>6</b> possess
similar layer structures which are further constructed to form 3-D networks by hydrogen bonds and/or π−π aromatic
interactions. <b>4</b> comprises 1-D chains that are further interlinked via hydrogen bonds, resulting in a 3-D network. In
the three europium complexes, all the europium ions are eight-coordinated, while the coordination numbers of the
ytterbium ions in other three-coordination polymers range from six to eight. Crystal data: for <b>1</b>, monoclinic, space
group <i>P</i>2<sub>1</sub>/<i>c</i>, with <i>a</i> = 12.565(6) Å, <i>b</i> = 16.005(8) Å, <i>c</i> = 12.891(6) Å, β = 102.173(8)°, and <i>Z</i> = 4; for <b>2</b>,
monoclinic, space group <i>P</i>2<sub>1</sub>/<i>c</i>, with <i>a</i> = 20.979(4) Å, <i>b</i> = 11.5989(19) Å, <i>c</i> = 20.810(3) Å, β = 110.391(3)°, and
<i>Z</i> = 4; for <b>3</b>, triclinic, space group <i>P</i>1̄, with <i>a</i> = 10.331(5) Å, <i>b</i> = 10.887(5) Å, <i>c</i> = 11.404(5) Å, α = 107.660(7)°,
β = 91.787(7)°, γ = 112.946(6)°, and <i>Z</i> = 2; for <b>4</b>, triclinic, space group <i>P</i>1̄, with <i>a</i> = 11.517(5) Å, <i>b</i> = 13.339(5)
Å, <i>c</i> = 13.595(6) Å, α = 87.888(7)°, β = 67.759(6)°, γ = 68.070(6)°, and <i>Z</i> = 2; for <b>5</b>, orthorhombic, space
group <i>C</i>222<sub>1</sub>, with <i>a</i> = 8.174(2) Å, <i>b</i> = 24.497(7) Å, <i>c</i> = 29.161(8) Å, and <i>Z</i> = 8; for <b>6</b>, triclinic, space group <i>P</i>1̄,
with <i>a</i> = 10.349(3) Å, <i>b</i> = 11.052(3) Å, <i>c</i> = 19.431(6) Å, α = 105.464(4)°, β = 91.300(5)°, γ = 93.655(5)°, and
<i>Z</i> = 2. The magnetic properties of <b>1</b> and <b>4</b> were investigated. The photophysical properties of <b>1</b> were also studied.
